Air conditioner freeze up

[SALEEN961]

I forwarded the TSB to my dealer and here’s what they said for what it’s worth…….

“I see that you are definitely on the right track! I reviewed this with our service manager. That TSB was from March of 2022 and has now been updated by Ford. The new TSB states that we are not to replace the evaporator or the temperature sensor, it will not prevent the problem from reoccurring. It is a design flaw and that they are working on a solution that will prevent the evaporator from freezing up during humid conditions.
I will let you know as soon as I hear of any updates.”

There is normally a 2-3 month delay between when a TSB is first published and when it shows up on sources like Alldata. So it is completely possible that the TSB I posted has been recently updated or that a new fix or service procedure has been developed.

That being said, I'm not sure if I completely believe their statement that Ford no longer wants dealers to replace evaporator temperature sensors that have failed. It's possible that there are multiple common issues and that the evaporator temperature sensor isn't always at fault, but if they test yours and it is bad, they should replace it just like any other part that fails under warranty should be replaced.

I wonder if you would get the same answer from a different dealer.

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[Daviddbt]

I forwarded the TSB to my dealer and here’s what they said for what it’s worth…….

“I see that you are definitely on the right track! I reviewed this with our service manager. That TSB was from March of 2022 and has now been updated by Ford. The new TSB states that we are not to replace the evaporator or the temperature sensor, it will not prevent the problem from reoccurring. It is a design flaw and that they are working on a solution that will prevent the evaporator from freezing up during humid conditions.
I will let you know as soon as I hear of any updates.”

Please keep me posted, my truck is doing this (fan blower on, quite loud, nothing coming out of the vents when the AC is on). I'm not sure what we can do about it for now . . .

 

[loganlaporte]

Please keep me posted, my truck is doing this (fan blower on, quite loud, nothing coming out of the vents when the AC is on). I'm not sure what we can do about it for now . . .

When this happens just turn off the A/C [button] function. Wait about 10 seconds, your truck will piss water and air flow will return. No need to turn the truck off or even stop.

 

[loganlaporte]

See this thread for further information.
https://www.f150gen14.com/forum/threads/air-conditioning-quit-working-blowing.17605/post-345938

 

[Daviddbt]

When this happens just turn off the A/C [button] function. Wait about 10 seconds, your truck will piss water and air flow will return. No need to turn the truck off or even stop.

Thank you, I'll give this a try. I hope there is a permanent fix soon! And thank you for posting the thread with more information.

 

[Meterman]

When this happens just turn off the A/C [button] function. Wait about 10 seconds, your truck will piss water and air flow will return. No need to turn the truck off or even stop.

I was not able to just shut it off for 10 seconds, I actually timed it and it took at least 2 minutes. I had a 6 hour drive on June 30th. It was 85+ and humid. The A/C shut down about 2 hours into the drive, all freeway driving too, and about every 30 minutes after that it happened 4 more times. I shut tht A/C off for 2 minutes and it worked again. Then it didn't happen for the last 2 hours of the drive. I was on the road from 10am to 4pm.

Oddly enough ever since I had it into the dealer, which they only attached there diag equip, it seems to be happening more often and not thawing as well as before. I had arranged to stop at the dealer then next time it happened, so I called them and said it's happening, they said stop by. I had to make sure they did not turn it off, which they didn't. What sucked was the truck shuts off after 30 minutes of idling, so that's actually what happened. They did run diagnostics for 30 min before the truck shut off and found nothing. I know it a coincidence that it's worse but at least summer is almost over and maybe Ford will get a fix before next year.

 

[fog53]

Dealer has had my truck in the shop to address this issue, was told it was probably the evaporator core freezing up. They have had the truck since March 14. Couple excuses on why it is taking so long...delay on getting parts especially an o-ring. Technicians out with the flu. To tell you the truth I'm not at all comfortable with what will be the delivered product. I am anticipating more AC issues and probably electronic issues. I truly hope I'm mistaken, my dealer has been spot on with other repairs when I had the Bronco Sport that was /is notorious for service bulletins and recalls.

 

[fog53]

Just picked up my 2023 from dealer after repair to address the AC problem. They replaced the evaporator core and complied with TSB24-2093 software update. Both are attached. Not sure why the top of the TSB shows a 2024 Bronco Sport but the first page shoes vehicles affected by TSB. The replacement of the eval core was a lot more involved than I thought. According to the writeup they had to remove the front seats, dash, center console and HVAC unit. Time will tell if the AC problems resolved and if there are no side effects from removing all the stuff they had to remove.

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